So et al reported equations for estimating body weight in pediatric patients. The authors are from the University of North Carolina Children's Hospital and Moses Cone Health System in Greensboro, North Carolina.
Patient selection: <= 10 years of age
Parameters:
(1) age in years (<= 10 years of age)
(2) gender
(3) race (black vs nonblack)
Model A - Analogous to Leffler Formula
Patient
Weight in kilograms
Age < 1 year, Black, Male
(6.93 * (age)) + 3.15 + 0.24 - 0.22
Age < 1 Year, Black, Female
(6.93 * (age)) + 3.15 - 0.22
Age < 1 Year, Nonblack, Male
(6.93 * (age)) + 3.15 + 0.24
Age < 1 Year, Nonblack, Female
(6.93 * (age)) + 3.15
Age >=1 year, Black, Male
(3.48 * (age)) + 5.61 + 0.65
Age >= 1 Year, Black, Female
(3.48 * (age)) + 5.61
Age >= 1 Year, Nonblack, Male
(3.1 * (age)) + 5.61 + 0.65
Age >= 1 Year, Nonblack, Female
(3.1 * (age)) + 5.61
When condensed
Patient
Weight in kilograms
Age < 1 year, Black, Male
(6.93 * (age)) + 3.17
Age < 1 Year, Black, Female
(6.93 * (age)) + 2.93
Age < 1 Year, Nonblack, Male
(6.93 * (age)) + 3.39
Age < 1 Year, Nonblack, Female
(6.93 * (age)) + 3.15
Age >=1 year, Black, Male
(3.48 * (age)) + 6.26
Age >= 1 Year, Black, Female
(3.48 * (age)) + 5.61
Age >= 1 Year, Nonblack, Male
(3.1 * (age)) + 6.26
Age >= 1 Year, Nonblack, Female
(3.1 * (age)) + 5.61
Model B - analogous to Theron Formula
Patient
Weight in kilograms
Black, Male
EXP((0.228 * (age)) + 1.73 + 0.05)
Black, Female
EXP((0.228 * (age)) + 1.73)
Nonblack, Male
EXP((0.244 * (age)) + 1.73 + 0.05)
Nonblack. Female
EXP((0.244 * (age)) + 1.73)
When condensed
Patient
Weight in kilograms
Black, Male
EXP((0.228 * (age)) + 1.78)
Black, Female
EXP((0.228 * (age)) + 1.73)
Nonblack, Male
EXP((0.244 * (age)) + 1.78)
Nonblack. Female
EXP((0.244 * (age)) + 1.73)
Limitations:
• Additional studies are needed to test the validity of these equations.
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